International Business Machines Corporation

Jeremy R Geddes

Aaron J Quirk

Hugh Edward Hockett

Kristin R Whetstone

Detecting stalling of a software process in a computer system includes receiving identification of a work process thread group, including a work process thread, for a task. The task is marked as running responsive to detecting whether there is a state change for the work process thread and is marked as stalled responsive to detecting an absence of the state change for a first predefined amount of time. The work process is marked as stalled responsive to detecting an absence of a predetermined signal from the work process for a second predefined amount of time. An API gets stack traces for the work process thread via calls. Instances of a hash are calculated for each of the stack traces. Respective instances of the hash calculated at least the first amount of time apart are compared for detecting whether there is a state change for the work process thread.

Technology for stall detection

Detecting stalling of a software process in a computer system includes receiving identification of a task thread group executing in a work process executing on a computer system. The task thread group includes one or more threads and the receiving includes receiving identification of the one or more threads by a control process executing on a computer system. The detecting includes detecting whether there is a thread state change for the task thread group, marking the task as running responsive to detecting a thread state change for the task thread group, marking the task as stalled responsive to detecting an absence of a thread state change for at least a predefined amount of time, and marking the work process as stalled responsive detecting an absence of a predetermined signal from the work process for at least a predefined amount of time.

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Raleigh, NC, United States of America

Jeremy R Geddes